.bmi-calculator-tool { --gray-900:#111; --gray-800:#222; --gray-700:#444; --gray-600:#666; --gray-500:#888; --gray-300:#ccc; --gray-200:#ddd; --gray-100:#eee; --gray-50:#f7f7f7; --border:#ddd; --border-strong:#aaa; --text-primary:#111; --text-secondary:#444; --text-tertiary:#666; --text-on-dark:#fff; --text-on-dark-secondary:#ccc; --bg:#fff; --bg-soft:#f7f7f7; --bg-hover:#eee; --bg-active:#111; --success:#276749; --warning:#8a4b00; --danger:#a12424; --radius:6px; --radius-sm:4px; box-sizing:border-box; width:100%; margin:0; color:var(--text-primary); background:#fff; font:15px/1.7 system-ui,-apple-system,"Segoe UI",sans-serif; }
.bmi-calculator-tool *, .bmi-calculator-tool *::before, .bmi-calculator-tool *::after { box-sizing:border-box; }
.bmi-calculator-tool button, .bmi-calculator-tool input, .bmi-calculator-tool summary { font:inherit; }
.bmi-calculator-tool button:focus-visible, .bmi-calculator-tool input:focus-visible, .bmi-calculator-tool summary:focus-visible, .bmi-calculator-tool a:focus-visible { outline:2px solid var(--gray-900); outline-offset:2px; }
.bmi-calculator-tool [hidden] { display:none!important; }
.bmi-calculator-tool .bmi-layout { width:100%; padding:0 360px 40px 30px; }
.bmi-calculator-tool .bmi-core { padding-top:16px; }
.bmi-calculator-tool .bmi-workbench { display:grid; grid-template-columns:minmax(280px,1fr) minmax(320px,1fr); gap:12px; align-items:stretch; }
.bmi-calculator-tool .bmi-card { margin:0; padding:18px 24px; border:1px solid var(--border); border-radius:var(--radius); background:var(--bg); }
.bmi-calculator-tool .bmi-form-head, .bmi-calculator-tool .bmi-result-head { display:flex; align-items:baseline; justify-content:space-between; gap:12px; margin-bottom:14px; }
.bmi-calculator-tool .bmi-form-head h2, .bmi-calculator-tool .bmi-result-head h2 { margin:0; font-size:18px; line-height:1.4; }
.bmi-calculator-tool .bmi-note { margin:0; color:var(--text-tertiary); font-size:13px; }
.bmi-calculator-tool .bmi-grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.bmi-calculator-tool .bmi-field label, .bmi-calculator-tool .bmi-fieldset legend { display:block; margin-bottom:6px; font-weight:700; }
.bmi-calculator-tool .bmi-fieldset { min-width:0; margin:0; padding:0; border:0; }
.bmi-calculator-tool .bmi-input-wrap { position:relative; }
.bmi-calculator-tool .bmi-input-wrap input { width:100%; min-height:42px; padding:8px 48px 8px 12px; border:1px solid var(--border-strong); border-radius:var(--radius-sm); background:#fff; color:var(--text-primary); }
.bmi-calculator-tool .bmi-input-wrap input[aria-invalid="true"] { border-color:var(--danger); }
.bmi-calculator-tool .bmi-unit { position:absolute; right:12px; top:50%; transform:translateY(-50%); color:var(--text-tertiary); pointer-events:none; }
.bmi-calculator-tool .bmi-error { min-height:21px; margin:3px 0 0; color:var(--danger); font-size:13px; }
.bmi-calculator-tool .bmi-segment { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.bmi-calculator-tool .bmi-segment button { min-height:42px; padding:8px 10px; border:1px solid var(--border-strong); border-radius:var(--radius-sm); background:#fff; color:var(--text-primary); cursor:pointer; }
.bmi-calculator-tool .bmi-segment button[aria-pressed="true"] { border-color:var(--gray-900); background:var(--gray-900); color:#fff; }
.bmi-calculator-tool .bmi-checkline { display:flex; gap:8px; align-items:flex-start; margin-top:12px; color:var(--text-secondary); }
.bmi-calculator-tool .bmi-checkline input { width:17px; height:17px; margin:3px 0 0; accent-color:#111; }
.bmi-calculator-tool .bmi-actions { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-top:16px; }
.bmi-calculator-tool .bmi-btn { min-height:44px; padding:10px 14px; border:1px solid var(--border-strong); border-radius:var(--radius); background:#fff; color:var(--text-primary); font:inherit; font-weight:700; cursor:pointer; }
.bmi-calculator-tool .bmi-btn:hover { background:var(--bg-hover); }
.bmi-calculator-tool .bmi-btn-primary { background:var(--bg-active); color:var(--text-on-dark); }
.bmi-calculator-tool .bmi-btn-primary:hover { background:#333; }
.bmi-calculator-tool .bmi-status { min-height:22px; margin:8px 0 0; color:var(--text-tertiary); font-size:13px; }
.bmi-calculator-tool .bmi-status.is-error { color:var(--danger); }
.bmi-calculator-tool .bmi-status.is-success { color:var(--success); }
.bmi-calculator-tool .bmi-result-card { display:flex; flex-direction:column; background:var(--gray-900); color:var(--text-on-dark); }
.bmi-calculator-tool .bmi-result-card .bmi-note { color:var(--text-on-dark-secondary); }
.bmi-calculator-tool .bmi-result-number { margin:8px 0 0; font-size:clamp(38px,6vw,52px); font-weight:800; line-height:1; font-variant-numeric:tabular-nums; }
.bmi-calculator-tool .bmi-result-category { margin:8px 0 20px; color:var(--text-on-dark-secondary); }
.bmi-calculator-tool .bmi-result-stats { display:grid; grid-template-columns:1fr 1fr; gap:1px; margin-top:auto; border:1px solid #444; border-radius:var(--radius-sm); overflow:hidden; }
.bmi-calculator-tool .bmi-result-stats div { min-width:0; padding:12px; background:#1b1b1b; }
.bmi-calculator-tool .bmi-result-stats dt { color:var(--text-on-dark-secondary); font-size:12px; }
.bmi-calculator-tool .bmi-result-stats dd { margin:4px 0 0; font-weight:700; font-variant-numeric:tabular-nums; }
.bmi-calculator-tool .bmi-result-tip { margin:16px 0 0; padding:10px 12px; border-left:3px solid #fff; color:var(--text-on-dark-secondary); font-size:14px; }
.bmi-calculator-tool .bmi-section { margin-top:32px; }
.bmi-calculator-tool .bmi-section h2 { margin:0 0 16px; padding-left:12px; border-left:3px solid var(--gray-900); font-size:24px; line-height:1.3; }
.bmi-calculator-tool .bmi-classification { overflow:hidden; padding:0; }
.bmi-calculator-tool .bmi-standard-summary { display:flex; justify-content:space-between; gap:12px; padding:14px 16px; border-bottom:1px solid var(--border); background:var(--gray-50); color:var(--text-secondary); }
.bmi-calculator-tool .bmi-standard-summary strong { color:var(--text-primary); }
.bmi-calculator-tool .bmi-table-wrap { overflow-x:auto; }
.bmi-calculator-tool .bmi-table { width:100%; border-collapse:collapse; }
.bmi-calculator-tool .bmi-table th, .bmi-calculator-tool .bmi-table td { padding:11px 16px; text-align:left; border-bottom:1px solid var(--border); }
.bmi-calculator-tool .bmi-table th { background:var(--gray-100); font-size:14px; }
.bmi-calculator-tool .bmi-table tbody tr:last-child td { border-bottom:0; }
.bmi-calculator-tool .bmi-table tbody tr:nth-child(even) { background:var(--gray-50); }
.bmi-calculator-tool .bmi-table .is-current td { background:#e9f4ed; }
.bmi-calculator-tool .bmi-table .is-current td:first-child { font-weight:800; }
.bmi-calculator-tool .bmi-alert { margin-top:16px; border-left:3px solid var(--danger); padding:12px 14px; background:#fcf5f5; color:var(--text-secondary); }
.bmi-calculator-tool .bmi-alert[hidden] { display:none; }
.bmi-calculator-tool .bmi-more .bmi-card { padding:0; overflow:hidden; }
.bmi-calculator-tool .bmi-more details { border-bottom:1px solid var(--border); }
.bmi-calculator-tool .bmi-more details:last-child { border-bottom:0; }
.bmi-calculator-tool .bmi-more summary { display:flex; align-items:center; min-height:52px; padding:12px 16px; font-size:16px; font-weight:700; cursor:pointer; list-style:none; }
.bmi-calculator-tool .bmi-more summary::-webkit-details-marker { display:none; }
.bmi-calculator-tool .bmi-more summary::after { content:"+"; margin-left:auto; font-size:22px; font-weight:400; }
.bmi-calculator-tool .bmi-more details[open] summary::after { content:"−"; }
.bmi-calculator-tool .bmi-acc-panel { padding:0 16px 18px; color:var(--text-secondary); }
.bmi-calculator-tool .bmi-acc-panel p:first-child { margin-top:0; }
.bmi-calculator-tool .bmi-acc-panel p:last-child { margin-bottom:0; }
.bmi-calculator-tool .bmi-acc-panel ul { margin:8px 0; padding-left:22px; }
.bmi-calculator-tool .bmi-acc-panel a { color:var(--text-primary); text-decoration-thickness:1px; text-underline-offset:2px; }
.bmi-calculator-tool .bmi-toast { position:fixed; z-index:10; left:50%; bottom:24px; transform:translateX(-50%); max-width:min(92vw,480px); padding:10px 14px; border:0; border-radius:var(--radius); background:var(--gray-900); color:#fff; font:inherit; cursor:pointer; }
.bmi-calculator-tool .bmi-toast[hidden] { display:none; }
@media (max-width:900px) { .bmi-calculator-tool .bmi-layout { padding:0 8px 24px; } }
@media (max-width:720px) { .bmi-calculator-tool .bmi-workbench, .bmi-calculator-tool .bmi-grid-2 { grid-template-columns:1fr; gap:8px; } .bmi-calculator-tool .bmi-card { padding:14px; } .bmi-calculator-tool .bmi-section { margin-top:24px; } .bmi-calculator-tool .bmi-result-stats { grid-template-columns:1fr; } }
@media (max-width:430px) { .bmi-calculator-tool .bmi-actions { grid-template-columns:1fr; } .bmi-calculator-tool .bmi-standard-summary { display:block; } .bmi-calculator-tool .bmi-standard-summary span { display:block; margin-top:4px; } .bmi-calculator-tool .bmi-table th, .bmi-calculator-tool .bmi-table td { padding:10px 12px; } }